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Sunday, August 10, 2014



The Third-Generation (3G) wireless technologies offer wireless web, SMS, MMS, EDGE, WCDMA, GPRS etc. 4G is a packet switched technology, uses bandwidth much more efficiently, allowing each user's packets to compete for available bandwidth. It solves the non-standardization problems associated with 3G. Data transfer rate will be 20 to 100 Mbps, which is 10 to 50 times than 3G and 10-20 times faster than ADSL. Operating frequency range will be 3 to 10 GHz and the IPv6 protocol will be used. In this paper, fundamentals of 4G and their various proposed architectures are explained. In India it can be used to network rural and urban areas, reduce cost of communication, flourish educational activities, facilitate research and development, faster internet connectivity, more cellular options, real time information systems, crisis management, Tele-medicines and many more. The present 3G networks need not to be discarded, and can be used in conjunction with 4G technology. There are various architectures proposed that can be used to deploy 4G.

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